/* 首页 */

/* 1.页面头部 */
header {
    color: #a5a4a4;
    background: #282828;
  }
  
  /* 1.1 顶部导航栏 */
  .top-nav {
    display: flex;
    align-items: center;
    height: 3rem;
    font-size: 1.2rem;
  }
  
  .top-nav .push-right {
    margin-left: auto;
  }
  
  .top-nav a {
    color: #a5a4a4;
  }
  
  /* 使用伪元素实现顶部链接中间的竖线 */
  .top-nav a:not(:last-of-type)::after {
    content: "|";
    display: inline-block;
    margin: 0 1rem;
  }
  
  /* 1.2 首页Logo */
  div.logo {
    height: 10rem;
    background: #89211b url(../images/head.jpg) no-repeat center center;
  }
  
  h1 {
    height: 10rem;
  }
  
  /* 2.导航菜单 */
  
  nav {
    background: #ebebeb;
  }
  
  nav a {
    display: block;
    text-align: center;
    height: 4rem;
    line-height: 4rem;
  }
  
  /* 2.1 主菜单 */
  nav ul {
    display: flex;
    align-items: center;
    justify-content: space-around;
  }
  
  nav li {
    flex: 1;
    position: relative;
  }
  
  nav li > a {
    font-size: 1.6rem;
  }
  
  nav li:first-of-type > a {
    color: #fff;
    background-color: #89211b;
  }
  
  nav li:hover > a {
    color: #fff;
    background-color: #89211b;
  }
  
  /* 2.2 二级菜单定义 */
  
  /* 默认隐藏并脱离文档流 */
  nav ul.sub-menu {
    display: none;
    position: absolute;
  }
  
  nav li:hover ul.sub-menu {
    display: flex;
    flex-direction: column;
    background-color: #89211b;
    align-items: stretch;
    /* width: calc(120vw / 9); */
    width: calc(120rem / 9);
  }
  
  nav ul.sub-menu a {
    color: #fff;
    font-size: 1.2rem;
  }
  
  nav ul.sub-menu li:hover > a {
    background-color: #a1261f;
  }
  
  /* 3页面主体 */
  .t header{
    display: flex;
    align-items: center;
    color: #89211b;
    height: 5rem;
    line-height: 5rem;
    background: transparent;
    border-bottom: 1px dashed #b2b2b2;
    padding-bottom: 1rem;
  }
  
  .t h2{
    font-size: 2rem;
    margin-left: 1rem;
  }
  
  .t .more{
    margin-left: auto;
  }
  
  
  /* 3.1 轮播图 */
  .banner {
    display: flex;
    justify-content: center;
  }
  
  /* 轮播图区域的左右遮罩层 */
  .banner p {
    flex: 1 1 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
    position: relative;
  }
  
  /* 利用背景+盒子“窗口”显示不同的背景切片 */
  .banner p a.arrow {
    display: block;
    width: 6rem;
    height: 100%;
    position: absolute;
    cursor: pointer;
    top: 0;
    z-index: 9;
    background-color: rbga(0, 0, 0, 0.6);
  }
  
  .banner p a.prev {
    background: url(../images/slider-arrow.png) no-repeat -18rem 0;
    right: 0;
  }
  
  .banner p a.prev:hover {
    background: url(../images/slider-arrow.png) no-repeat -12rem 0;
  }
  
  .banner p a.next {
    background: url(../images/slider-arrow.png) no-repeat -6rem 0;
    left: 0;
  }
  
  .banner p a.next:hover {
    background: url(../images/slider-arrow.png) no-repeat 0 0;
  }
  
  /* 轮播图区域 固定宽度120rem*/
  .banner ul {
    flex: 0 0 120rem;
    display: flex;
    align-items: center;
    justify-content: start;
  }
  
  .banner ul > li {
    flex: 0 0 120rem;
  }
  
  /* 位移第一个，后面移动采用方式 */
  .banner ul > li:first-of-type {
    margin-left: -120rem;
  }
  
  .banner figure {
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 40rem;
  }
  
  .banner figcaption {
    font-size: 1.6rem;
    color: #fff;
    background: rgba(0, 0, 0, 0.4);
    height: 4rem;
    line-height: 4rem;
    margin-top: -4rem;
    margin-left: 2rem;
    padding-left: 8rem;
  }
  
  /* 3.2 学院新闻 */
  .news{
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  .news section{
    display: flex;
    align-items: center;
    height: 30rem;
  }
  
  .news a:hover{
    color: #89211b;
  }
  
  /* 图片新闻 */
  .news article:nth-of-type(1){
    flex: 0 0 55%;
    height: 30rem;
  }
  
  .news article:nth-of-type(1) ul{
    display: flex;
  }
  
  .news article:nth-of-type(1) li{
    flex: 1 1 50%;
    margin-right: 2.5rem;
    background: #f7f7f7;
    display: flex;
    flex-direction: column;
  }
  
  .news article:nth-of-type(1) img{
    border-bottom: 0.3rem #ec7c51 solid;
    width: 100%;
  }
  
  .news article:nth-of-type(1) li:nth-last-of-type(1) img{
    border-bottom: 0.3rem #efab09 solid;
  }
  
  .news article:nth-of-type(1) a{
    display: inline-block;
    height: 2.4rem;
    line-height: 2.4rem;
    padding: 0 1rem;
    font-weight: bold;
  }
  
  .news article:nth-of-type(1) p{
    color: #666;
    padding: 0.5rem 1rem 0 1rem;
    height: 4rem;
    line-height: 2rem;
  }
  
  .news article:nth-of-type(1) span{
    color: #666;
    padding-left: 1rem;
  }
  
  
  /* 文字新闻 */
  .news article:nth-of-type(2){
    flex: 0 0 45%;
  }
  
  .news article:nth-of-type(2) ul{
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    height: 30rem;
  }
  
  .news article:nth-of-type(2) li{
    width: calc(50% - 1.6rem);
    height: 4.8rem;
    line-height: 2.4rem;
    border-bottom: .1rem solid #e1e1e1;
    padding-bottom: 1.3rem;
    margin-bottom: 1.2rem;;
    margin-left: 1.6rem;
    font-size: 1.4rem;
  }
  
  /* 3.3 通知公告&学工动态&链接 */
  .mix{
    background: #f7f7f7 url(../images/bg.jpg) no-repeat center top;
    height: 40rem;
  }
  
  .mix > div{
    display: flex;
    align-items: center;
    justify-content: start;
  }
  /* 3.3.1 通知公告 */
  .mix section:nth-of-type(1){
    flex: 0 0 54rem;
    margin-right: 5rem;
  }
  
  .mix section:nth-of-type(1) ul{
    display: flex;
    flex-direction: column;
  }
  
  .mix section:nth-of-type(1) li{
    height: 7rem;
    margin-top: 2rem;
  }
  
  /* 局部采用浮动方式实现 */
  .mix section:nth-of-type(1) div{
    float: left;
    padding-right: 1rem;
  }
  
  .mix  section:nth-of-type(1) span{
    display: block;
    width: 7rem;
    height: 3.5rem;
    line-height: 3.5rem;
    text-align: center;
  }
  
  .mix section:nth-of-type(1) span:nth-of-type(1){
    background-color: #89211b;
    color: #fff;
    font-size: 2.4rem;
    font-weight: bold;
  }
  
  .mix section:nth-of-type(1) span:nth-of-type(2){
    border: .1rem solid #bcbcbc;
    width: 6.8rem;
    height: 3.3rem;
    line-height: 3.3rem;
    font-size: 1.4rem;
  }
  
  
  /* 3.3.2 学工动态 */
  .mix section:nth-of-type(2){
    flex: 0 0 40rem;
    margin-right: 2.5rem;
  }
  
  .mix section:nth-of-type(2) li{
    height: 3.3rem;
    line-height: 3.3rem;
    background: url(../images/icon6.png) no-repeat left center;
    padding-left: 2rem;
    font-size: 1.4rem;
  }
  
  .mix section:nth-of-type(2) a:hover{
    color: #89211b;
  }
  
  
  
  /* 3.3.3 链接 */
  .mix aside{
    flex: 0 0 18.5rem;
  }
  
  .mix aside ul{
    display: flex;
    flex-direction: column;
    justify-content: center;
    margin-top: 1.5rem;
  }
  
  .mix aside a{
    display: inline-block;
    box-sizing: border-box;
    width: 18rem;
    height: 4.8rem;
    line-height: 4.8rem;
    border: .1rem solid #d4d4d4;
    margin-top: .5rem;
    padding-left: 6.5rem;
    font-size: 1.4rem;
  }
  
  .mix aside a:hover{
    border: .1rem solid #89211b;
    background-color: #89211b;
    color: #fff;
  }
  
  .icon1 {
    background: url(../images/b1.png) no-repeat 2rem center; 
  }
  
  .icon1:hover{
    background: url(../images/b01.png) no-repeat 2rem center; 
  }
  
  .icon2 {
    background: url(../images/b2.png) no-repeat 2rem center; 
  }
  
  .icon2:hover{
    background: url(../images/b02.png) no-repeat 2rem center; 
  }
  
  .icon3 {
    background: url(../images/b3.png) no-repeat 2rem center; 
  }
  
  .icon3:hover{
    background: url(../images/b03.png) no-repeat 2rem center; 
  }
  
  .icon4 {
    background: url(../images/b4.png) no-repeat 2rem center; 
  }
  
  .icon4:hover{
    background: url(../images/b04.png) no-repeat 2rem center; 
  }
  
  .icon5 {
    background: url(../images/b5.png) no-repeat 2rem center; 
  }
  
  .icon5:hover{
    background: url(../images/b05.png) no-repeat 2rem center; 
  }
  
  .icon6 {
    background: url(../images/b6.png) no-repeat 2rem center; 
  }
  
  .icon6:hover{
    background: url(../images/b06.png) no-repeat 2rem center; 
  }
  
  /* 3.4 专题网站 */
  .topic{
    overflow: hidden;
  }
  
  .topic ul{
    display: flex;
    align-items: center;
    justify-self: start;
  }
  
  .topic li{
    flex: 0 0 27rem;
    margin: 2rem;
  }
  
  .topic li:first-of-type{
    margin-left: 0;
  }
  
  /* 4. 页面底部 */
  footer{
    height: 11.7rem;
    background: rgba(0,0,0,.7) url(../images/f-bg.jpg) no-repeat center center;
    color: #fff;
    font-size: 1.4rem;
    padding-top: 1rem;
  }
  
  address{
    font-style: normal;
    line-height: 3;
  }